Abstract
Incorrect registration during computer assisted total knee arthroplasty (CA-TKA) leads to malposition of implants. Our aim was to evaluate the tolerable error in anatomic landmark registration. We incorrectly registered the femoral epicondyles, femoral and tibial centers, as well as the malleoli and documented the change in angulation or rotation. We found that the distal femoral epicondyles were the most difficult anatomic landmarks to register. The other bony landmarks were more forgiving. Identification of the distal femoral epicondyles has a high inter-observer and intra-observer variability. Our observation that there is less than 2. mm of safe zone in the anterior or posterior direction during registration of the medial and lateral epicondyles may explain the inability of CA-TKA to improve upon the outcomes of conventional TKA.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 938-942 |
| Number of pages | 5 |
| Journal | Journal of Arthroplasty |
| Volume | 28 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2013 |
Fingerprint
Keywords
- CA-TKA
- Computer assisted
- Landmark registration
- Navigation
- Safe zone
- TKA
- Total knee arthroplasty
ASJC Scopus subject areas
- Orthopedics and Sports Medicine
Cite this
Identification of the landmark registration safe zones during total knee arthroplasty using an imageless navigation system. / Amanatullah, Derek F.; Di Cesare, Paul E.; Meere, Patrick A.; Pereira, Gavin Caesar.
In: Journal of Arthroplasty, Vol. 28, No. 6, 06.2013, p. 938-942.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Identification of the landmark registration safe zones during total knee arthroplasty using an imageless navigation system
AU - Amanatullah, Derek F.
AU - Di Cesare, Paul E.
AU - Meere, Patrick A.
AU - Pereira, Gavin Caesar
PY - 2013/6
Y1 - 2013/6
N2 - Incorrect registration during computer assisted total knee arthroplasty (CA-TKA) leads to malposition of implants. Our aim was to evaluate the tolerable error in anatomic landmark registration. We incorrectly registered the femoral epicondyles, femoral and tibial centers, as well as the malleoli and documented the change in angulation or rotation. We found that the distal femoral epicondyles were the most difficult anatomic landmarks to register. The other bony landmarks were more forgiving. Identification of the distal femoral epicondyles has a high inter-observer and intra-observer variability. Our observation that there is less than 2. mm of safe zone in the anterior or posterior direction during registration of the medial and lateral epicondyles may explain the inability of CA-TKA to improve upon the outcomes of conventional TKA.
AB - Incorrect registration during computer assisted total knee arthroplasty (CA-TKA) leads to malposition of implants. Our aim was to evaluate the tolerable error in anatomic landmark registration. We incorrectly registered the femoral epicondyles, femoral and tibial centers, as well as the malleoli and documented the change in angulation or rotation. We found that the distal femoral epicondyles were the most difficult anatomic landmarks to register. The other bony landmarks were more forgiving. Identification of the distal femoral epicondyles has a high inter-observer and intra-observer variability. Our observation that there is less than 2. mm of safe zone in the anterior or posterior direction during registration of the medial and lateral epicondyles may explain the inability of CA-TKA to improve upon the outcomes of conventional TKA.
KW - CA-TKA
KW - Computer assisted
KW - Landmark registration
KW - Navigation
KW - Safe zone
KW - TKA
KW - Total knee arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=84878209016&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84878209016&partnerID=8YFLogxK
U2 - 10.1016/j.arth.2012.12.013
DO - 10.1016/j.arth.2012.12.013
M3 - Article
C2 - 23566700
AN - SCOPUS:84878209016
VL - 28
SP - 938
EP - 942
JO - Journal of Arthroplasty
JF - Journal of Arthroplasty
SN - 0883-5403
IS - 6
ER -